diff --git a/.github/workflows/ant.yml b/.github/workflows/ant.yml
index c53d4477dc5..8c1fa66b705 100644
--- a/.github/workflows/ant.yml
+++ b/.github/workflows/ant.yml
@@ -33,7 +33,7 @@ jobs:
 
     strategy:
       matrix:
-        java_version: [ 17, 21-ea ]
+        java_version: [ 17, 21 ]
 
     steps:
       - name: Start MySQL Database
diff --git a/antbuild.properties b/antbuild.properties
index e6b1e73d678..1131c9cdc77 100644
--- a/antbuild.properties
+++ b/antbuild.properties
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2008, 2021 Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2008, 2023 Oracle and/or its affiliates. All rights reserved.
 #
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License v. 2.0 which is available at
@@ -193,6 +193,7 @@ persistence22.javadoc.jar=jakarta.persistence.javadoc_2.2.3.jar
 persistence21.jar=javax.persistence_2.1.1.v201509150925.jar
 persistence20.jar=javax.persistence_2.0.6.v201308211412.jar
 persistence10.jar=javax.persistence_1.0.0.v200905011740.jar
+persistence20_21_diff.jar=javax.persistence20_21_diff.jar
 unsigned.persistence10.jar=javax.persistence_unsigned_for_testing_1.0.0.jar
 jaxb-api.src.jar=jakarta.xml.bind-api-source.jar
 jaxb-api.jar=jakarta.xml.bind-api.jar
@@ -284,6 +285,7 @@ kvclient.jar=kvclient.jar
 about-file=about.html
 readme-file=readme.html
 license-files=license.*
+module-info-file=module-info.class
 setenv-scripts=setenv.*
 package-rename-scripts=packageRename.*
 jaxb-compiler-scripts=jaxb-compiler.*
diff --git a/antbuild.xml b/antbuild.xml
index 2d0fdac69a8..bab5d4cba74 100644
--- a/antbuild.xml
+++ b/antbuild.xml
@@ -424,7 +424,7 @@
     <target name="build-src" depends="build-eclipselink-jar, package-src-jar" description="build EclipseLink jar and source zip"/>
 
     <!-- Default ant target, compiles all components and tests, builds eclipselink.jar. -->
-    <target name="build" depends="build-eclipselink-jar, build-core-test, build-oracle-if-dependencies" description="build all EclipseLink distribution files except docs"/>
+    <target name="build" depends="build-eclipselink-jar, package-persistence20_21_diff-jar, build-core-test, build-oracle-if-dependencies" description="build all EclipseLink distribution files except docs"/>
 
     <!-- Default ant target, compiles all components and tests, builds eclipselink.jar. -->
     <target name="build-no-test" depends="build-eclipselink-jar, build-util, package-all" description="build all EclipseLink distribution files except docs"/>
@@ -983,63 +983,11 @@
         <echo message="&lt;/body&gt;&lt;/html&gt;" file="${trunk.build.location}/TestConfig.html" append="true"/>
     </target>
 
-    <!-- Packages the eclipselink.jar. -->
-    <target name="package-eclipselink-jar" description="build EclipseLink jar">
-        <delete file="${eclipselink.jar}"/>
-        <echo message="Implementation-Version: ${version.string}"/>
-        <delete dir="${build.dir}/javax.persistence/${classes.dir}" failonerror="false"/>
-        <mkdir dir="${build.dir}/javax.persistence/${classes.dir}"/>
-        <unzip src="${eclipselink.jpa.plugins}/${persistence22.jar}" dest="${build.dir}/javax.persistence/${classes.dir}"/>
-        <mkdir dir="${build.dir}/hermes/${classes.dir}"/>
-        <unzip src="${eclipselink.plugins}/org.eclipse.persistence.jpa.jpql_${version.string}.jar" dest="${build.dir}/hermes/${classes.dir}"/>
-        <jar jarfile="${eclipselink.jar}" duplicate="preserve">
-             <manifest>
-                <attribute name="Specification-Title"    value="${eclipselink.specification.title}"/>
-                <attribute name="Specification-Vendor"   value="${specification.vendor}"/>
-                <attribute name="Specification-Version"  value="${release.version}"/>
-                <attribute name="Implementation-Title"   value="${eclipselink.implementation.title}"/>
-                <attribute name="Implementation-Vendor"  value="${implementation.vendor}"/>
-                <attribute name="Implementation-Version" value="${version.string}"/>
-                <attribute name="Release-Designation"    value="${release.designation}"/>
-                <attribute name="Premain-Class"          value="${eclipselink.premain.class}"/>
-                <attribute name="Main-Class"             value="${eclipselink.main.class}"/>
-            </manifest>
-            <!-- Include license files first to ensure the right ones are included -->
-            <fileset dir=".">
-                <include name="${about-file}"/>
-                <include name="${readme-file}"/>
-                <include name="${license-files}"/>
-            </fileset>
-            <!-- Include all non-duplicate content from bOSGi bundles -->
-            <zipgroupfileset dir="${eclipselink.plugins}">
-                <include name="org.eclipse.persistence*${version.string}.jar"/>
-                <include name="${asm.jar}"/>
-                <include name="org.eclipse.persistence.antlr*.jar"/>
-                <include name="org.eclipse.persistence.oracle_*.jar"/>
-                <exclude name="*.jpa.jpql*.jar"/>
-                <exclude name="*source*.jar"/>
-                <exclude name="*modelgen*.jar"/>
-                <exclude name="*equinox*.jar"/>
-                <exclude name="*builder*.jar"/>
-                <exclude name="*jpars*.jar"/>
-                <exclude name="*nosql*.jar"/>
-                <exclude name="*extension*.jar"/>
-            </zipgroupfileset>
-            <!-- Include hermes runtime Only -->
-            <fileset dir="${build.dir}/hermes/${classes.dir}">
-                <include name="**/*"/>
-                <exclude name="**/tools*/**"/>
-            </fileset>
-            <!-- Include Moxy Dynamicxjc classes -->
-            <fileset
-                dir="${eclipselink.moxy.dynamicxjc}/${classes.dir}"
-                includes="**/*.class,"/>
-            <!-- Include necessary JAXB classes -->
-            <fileset
-                dir="${eclipselink.util.jaxb}/${classes.dir}"
-                includes="**/*.class,"/>
-            <!-- JPA 2.0/2.2 concurrent dev solution: New classes from javax.persistence 2.0 & 2.2 -->
-            <fileset
+    <!-- Packages the persistence20_21_diff.jar. -->
+    <target name="package-persistence20_21_diff-jar" description="build javax.presistence 2.1 vs 2.0 diff jar">
+        <jar jarfile="${build.dir}/${persistence20_21_diff.jar}" duplicate="preserve">
+        <!-- JPA 2.0/2.2 concurrent dev solution: New classes from javax.persistence 2.0 & 2.2 -->
+        <fileset
                 dir="${build.dir}/javax.persistence/${classes.dir}"
                 includes="
                     javax/persistence/Access.class,
@@ -1162,8 +1110,116 @@
                     javax/persistence/criteria/CommonAbstractQuery.class,
                     javax/persistence/criteria/CriteriaDelete.class,
                     javax/persistence/criteria/CriteriaUpdate.class,
-                    javax/persistence/criteria/CommonAbstractCriteria.class
-            "/>
+                    javax/persistence/criteria/CommonAbstractCriteria.class"/>
+        </jar>
+    </target>
+
+    <!-- Packages the eclipselink.jar. -->
+    <target name="package-eclipselink-jar" description="build EclipseLink jar">
+        <delete file="${eclipselink.jar}"/>
+        <echo message="Implementation-Version: ${version.string}"/>
+        <delete dir="${build.dir}/javax.persistence/${classes.dir}" failonerror="false"/>
+        <mkdir dir="${build.dir}/javax.persistence/${classes.dir}"/>
+        <unzip src="${eclipselink.jpa.plugins}/${persistence22.jar}" dest="${build.dir}/javax.persistence/${classes.dir}"/>
+        <mkdir dir="${build.dir}/hermes/${classes.dir}"/>
+        <unzip src="${eclipselink.plugins}/org.eclipse.persistence.jpa.jpql_${version.string}.jar" dest="${build.dir}/hermes/${classes.dir}"/>
+        <jar jarfile="${eclipselink.jar}" duplicate="preserve">
+             <manifest>
+                <attribute name="Specification-Title"    value="${eclipselink.specification.title}"/>
+                <attribute name="Specification-Vendor"   value="${specification.vendor}"/>
+                <attribute name="Specification-Version"  value="${release.version}"/>
+                <attribute name="Implementation-Title"   value="${eclipselink.implementation.title}"/>
+                <attribute name="Implementation-Vendor"  value="${implementation.vendor}"/>
+                <attribute name="Implementation-Version" value="${version.string}"/>
+                <attribute name="Release-Designation"    value="${release.designation}"/>
+                <attribute name="Premain-Class"          value="${eclipselink.premain.class}"/>
+                <attribute name="Main-Class"             value="${eclipselink.main.class}"/>
+            </manifest>
+            <!-- Include license files first to ensure the right ones are included -->
+            <fileset dir=".">
+                <include name="${about-file}"/>
+                <include name="${readme-file}"/>
+                <include name="${license-files}"/>
+            </fileset>
+            <!-- Include all non-duplicate content from bOSGi bundles -->
+            <zipgroupfileset dir="${eclipselink.plugins}">
+                <include name="org.eclipse.persistence*${version.string}.jar"/>
+                <include name="${asm.jar}"/>
+                <include name="org.eclipse.persistence.antlr*.jar"/>
+                <include name="org.eclipse.persistence.oracle_*.jar"/>
+                <exclude name="*.jpa.jpql*.jar"/>
+                <exclude name="*source*.jar"/>
+                <exclude name="*modelgen*.jar"/>
+                <exclude name="*equinox*.jar"/>
+                <exclude name="*builder*.jar"/>
+                <exclude name="*jpars*.jar"/>
+                <exclude name="*nosql*.jar"/>
+                <exclude name="*extension*.jar"/>
+            </zipgroupfileset>
+            <!-- Include hermes runtime Only -->
+            <fileset dir="${build.dir}/hermes/${classes.dir}">
+                <include name="**/*"/>
+                <exclude name="**/tools*/**"/>
+            </fileset>
+            <!-- Include Moxy Dynamicxjc classes -->
+            <fileset
+                dir="${eclipselink.moxy.dynamicxjc}/${classes.dir}"
+                includes="**/*.class,"/>
+            <!-- Include necessary JAXB classes -->
+            <fileset
+                dir="${eclipselink.util.jaxb}/${classes.dir}"
+                includes="**/*.class,"/>
+        </jar>
+
+        <delete dir="${build.dir}/eclipselink/${classes.dir}" failonerror="false"/>
+        <mkdir dir="${build.dir}/eclipselink/${classes.dir}"/>
+        <path id="eclipselink-jar.compile.module.path" cache="true">
+            <pathelement path="${eclipselink.plugins}/${annotation-api.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${activation.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${antlr}"/>
+            <pathelement path="${eclipselink.plugins}/${asm.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${glassfish-corba-omgapi.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${jaxb-api.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${jaxb-impl.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${jaxb-xjc.jar}"/>
+            <pathelement path="${eclipselink.jpa.plugins}/${persistence22.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${resource-api.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${json.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${validation-api.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${ejb-api.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${jms-api.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${transaction-api.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${servlet-api.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${soap-api.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${cdi-api.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${mail.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${ws-api.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${wsdl.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${wsrs-api.jar}"/>
+            <pathelement path="${eclipselink.plugins}/${slf4j-api.jar}"/>
+        </path>
+        <path id="eclipselink-jar.compile.class.path" cache="true">
+            <pathelement path="${eclipselink.jar}"/>
+        </path>
+        <unzip src="${eclipselink.jar}" dest="${build.dir}/eclipselink/${classes.dir}"/>
+        <echo message="module-path          ='${toString:eclipselink-jar.compile.module.path}'"/>
+        <javac srcdir="${eclipselink.features.base}/bundles/eclipselink/${src.dir}"
+               destdir="${build.dir}/eclipselink/${classes.dir}"
+               debug="${javac.debug}"
+               debuglevel="${javac.debuglevel}"
+               encoding="UTF-8"
+               optimize="${javac.optimize}"
+               release="11"
+               deprecation="${javac.deprecation}"
+               failonerror="true"
+               includes="module-info.java"
+               modulepathref="eclipselink-jar.compile.module.path">
+        </javac>
+        <jar jarfile="${eclipselink.jar}" update="true">
+            <!-- Include module-info.class -->
+            <fileset dir="${build.dir}/eclipselink/${classes.dir}">
+                <include name="${module-info-file}"/>
+            </fileset>
         </jar>
     </target>
 
diff --git a/buildsystem/compdeps/pom.xml b/buildsystem/compdeps/pom.xml
index 992cc589230..fe3feb86826 100644
--- a/buildsystem/compdeps/pom.xml
+++ b/buildsystem/compdeps/pom.xml
@@ -65,7 +65,7 @@
         <eclipselink.asm.version>9.5.0</eclipselink.asm.version>
         <!-- CQ #21139, 21140 -->
         <ch.qos.logback.version>1.2.3</ch.qos.logback.version>
-        <com.sun.xml.bind.version>2.3.3</com.sun.xml.bind.version>
+        <com.sun.xml.bind.version>2.3.8</com.sun.xml.bind.version>
         <com.sun.xml.messaging.version>1.5.1</com.sun.xml.messaging.version>
         <com.sun.xml.streambuffer.version>1.5.7</com.sun.xml.streambuffer.version>
         <com.sun.xml.ws.policy.version>2.7.6</com.sun.xml.ws.policy.version>
@@ -82,7 +82,7 @@
         <jakarta.jws.version>1.1.1</jakarta.jws.version>
         <jakarta.mail.version>1.6.4</jakarta.mail.version>
         <jakarta.persistence.version>2.2.3</jakarta.persistence.version>
-        <jakarta.resource.version>1.7.3</jakarta.resource.version>
+        <jakarta.resource.version>1.7.4</jakarta.resource.version>
         <jakarta.servlet.version>4.0.3</jakarta.servlet.version>
         <jakarta.transaction.version>1.3.3</jakarta.transaction.version>
         <jakarta.validation.version>2.0.2</jakarta.validation.version>
diff --git a/features/bundles/eclipselink/src/module-info.java b/features/bundles/eclipselink/src/module-info.java
new file mode 100644
index 00000000000..512fef4affc
--- /dev/null
+++ b/features/bundles/eclipselink/src/module-info.java
@@ -0,0 +1,298 @@
+/*
+ * Copyright (c) 2023 Oracle and/or its affiliates. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0,
+ * or the Eclipse Distribution License v. 1.0 which is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
+ */
+
+module eclipselink {
+
+    requires transitive java.desktop;
+    requires transitive java.instrument;
+    requires transitive java.management;
+    requires transitive java.naming;
+    requires transitive java.rmi;
+    requires transitive java.sql;
+    requires transitive java.xml;
+    requires jdk.unsupported;
+
+    //following cannot be optional because we provide
+    //implementation of its spi/extension here
+    requires transitive java.persistence;
+    requires transitive java.xml.bind;
+    requires com.sun.tools.xjc;
+
+
+    requires static jakarta.activation; //AM
+    requires static java.annotation; //AM
+    requires static java.json; //AM
+    requires static jakarta.mail; //AM
+    requires static java.validation; //AM
+    requires static java.ws.rs;
+
+    //requires static javax.cdi; //No any module name anywhere for used version
+    //requires static javax.el; //No any module name anywhere for used version
+    //requires static javax.inject; //No any module name anywhere for used version
+    requires static java.transaction;
+    //requires static javax.interceptor; //No any module name anywhere for used version
+    //requires static javax.messaging; //No any module name anywhere for used version
+    //requires static javax.resource; //No any module name anywhere for used version
+
+    requires static com.sun.xml.bind;
+
+    exports org.eclipse.persistence.jpa.jpql;
+    exports org.eclipse.persistence.jpa.jpql.parser;
+    exports org.eclipse.persistence.jpa.jpql.utility.iterable;
+    exports org.eclipse.persistence.jpa.jpql.utility.iterator;
+
+    exports org.eclipse.persistence;
+    exports org.eclipse.persistence.annotations;
+    exports org.eclipse.persistence.config;
+    exports org.eclipse.persistence.core.descriptors;
+    exports org.eclipse.persistence.core.mappings;
+    exports org.eclipse.persistence.core.mappings.converters;
+    exports org.eclipse.persistence.core.mappings.transformers;
+    exports org.eclipse.persistence.core.queries;
+    exports org.eclipse.persistence.core.sessions;
+    exports org.eclipse.persistence.descriptors;
+    exports org.eclipse.persistence.descriptors.changetracking;
+    exports org.eclipse.persistence.descriptors.copying;
+    exports org.eclipse.persistence.descriptors.invalidation;
+    exports org.eclipse.persistence.descriptors.partitioning;
+    exports org.eclipse.persistence.dynamic;
+    exports org.eclipse.persistence.eis;
+    exports org.eclipse.persistence.eis.interactions;
+    exports org.eclipse.persistence.eis.mappings;
+    exports org.eclipse.persistence.exceptions;
+    exports org.eclipse.persistence.exceptions.i18n;
+    exports org.eclipse.persistence.expressions;
+    exports org.eclipse.persistence.history;
+    exports org.eclipse.persistence.indirection;
+    exports org.eclipse.persistence.logging;
+    exports org.eclipse.persistence.mappings;
+    exports org.eclipse.persistence.mappings.converters;
+    exports org.eclipse.persistence.mappings.foundation;
+    exports org.eclipse.persistence.mappings.querykeys;
+    exports org.eclipse.persistence.mappings.structures;
+    exports org.eclipse.persistence.mappings.transformers;
+    exports org.eclipse.persistence.mappings.xdb;
+    exports org.eclipse.persistence.oxm;
+    exports org.eclipse.persistence.oxm.annotations;
+    exports org.eclipse.persistence.oxm.attachment;
+    exports org.eclipse.persistence.oxm.documentpreservation;
+    exports org.eclipse.persistence.oxm.json;
+    exports org.eclipse.persistence.oxm.mappings;
+    exports org.eclipse.persistence.oxm.mappings.converters;
+    exports org.eclipse.persistence.oxm.mappings.nullpolicy;
+    exports org.eclipse.persistence.oxm.platform;
+    exports org.eclipse.persistence.oxm.record;
+    exports org.eclipse.persistence.oxm.schema;
+    exports org.eclipse.persistence.oxm.sequenced;
+    exports org.eclipse.persistence.oxm.unmapped;
+    exports org.eclipse.persistence.platform.database;
+    exports org.eclipse.persistence.platform.database.converters;
+    exports org.eclipse.persistence.platform.database.events;
+    exports org.eclipse.persistence.platform.database.jdbc;
+    exports org.eclipse.persistence.platform.database.oracle.annotations;
+    exports org.eclipse.persistence.platform.database.oracle.jdbc;
+    exports org.eclipse.persistence.platform.database.oracle.plsql;
+    exports org.eclipse.persistence.platform.database.partitioning;
+    exports org.eclipse.persistence.platform.server;
+    exports org.eclipse.persistence.platform.server.glassfish;
+    exports org.eclipse.persistence.platform.server.was;
+    exports org.eclipse.persistence.platform.server.wls;
+    exports org.eclipse.persistence.platform.xml;
+    exports org.eclipse.persistence.queries;
+    exports org.eclipse.persistence.sequencing;
+    exports org.eclipse.persistence.services;
+    exports org.eclipse.persistence.services.glassfish;
+    exports org.eclipse.persistence.services.jboss;
+    exports org.eclipse.persistence.services.mbean;
+    exports org.eclipse.persistence.services.weblogic;
+    exports org.eclipse.persistence.services.websphere;
+    exports org.eclipse.persistence.sessions;
+    exports org.eclipse.persistence.sessions.broker;
+    exports org.eclipse.persistence.sessions.changesets;
+    exports org.eclipse.persistence.sessions.coordination;
+    exports org.eclipse.persistence.sessions.coordination.broadcast;
+    exports org.eclipse.persistence.sessions.coordination.jms;
+    exports org.eclipse.persistence.sessions.coordination.rmi;
+    exports org.eclipse.persistence.sessions.factories;
+    exports org.eclipse.persistence.sessions.interceptors;
+    exports org.eclipse.persistence.sessions.remote;
+    exports org.eclipse.persistence.sessions.remote.rmi;
+    exports org.eclipse.persistence.sessions.serializers;
+    exports org.eclipse.persistence.sessions.server;
+    exports org.eclipse.persistence.tools;
+    exports org.eclipse.persistence.tools.profiler;
+    exports org.eclipse.persistence.tools.schemaframework;
+    exports org.eclipse.persistence.tools.tuning;
+    exports org.eclipse.persistence.transaction;
+    exports org.eclipse.persistence.transaction.glassfish;
+    exports org.eclipse.persistence.transaction.jboss;
+    exports org.eclipse.persistence.transaction.sap;
+    exports org.eclipse.persistence.transaction.was;
+    exports org.eclipse.persistence.transaction.wls;
+
+    exports org.eclipse.persistence.sessions.coordination.corba;
+    exports org.eclipse.persistence.sessions.coordination.corba.sun;
+    exports org.eclipse.persistence.sessions.remote.corba.sun;
+    exports org.eclipse.persistence.sessions.remote.rmi.iiop;
+
+    exports org.eclipse.persistence.platform.database.oracle;
+    exports org.eclipse.persistence.platform.database.oracle.converters;
+    exports org.eclipse.persistence.platform.database.oracle.dcn;
+    exports org.eclipse.persistence.platform.database.oracle.ucp;
+    exports org.eclipse.persistence.platform.xml.xdk;
+    exports org.eclipse.persistence.tools.profiler.oracle;
+
+    exports org.eclipse.persistence.jpa;
+    exports org.eclipse.persistence.jpa.config;
+    exports org.eclipse.persistence.jpa.dynamic;
+    exports org.eclipse.persistence.jpa.metadata;
+    exports org.eclipse.persistence.tools.weaving.jpa;
+
+    exports org.eclipse.persistence.jaxb;
+    exports org.eclipse.persistence.jaxb.attachment;
+    exports org.eclipse.persistence.jaxb.compiler;
+    exports org.eclipse.persistence.jaxb.compiler.builder;
+    exports org.eclipse.persistence.jaxb.compiler.builder.helper;
+    exports org.eclipse.persistence.jaxb.compiler.facets;
+    exports org.eclipse.persistence.jaxb.dynamic;
+    exports org.eclipse.persistence.jaxb.dynamic.metadata;
+    exports org.eclipse.persistence.jaxb.javamodel;
+    exports org.eclipse.persistence.jaxb.javamodel.oxm;
+    exports org.eclipse.persistence.jaxb.javamodel.reflection;
+    exports org.eclipse.persistence.jaxb.javamodel.xjc;
+    exports org.eclipse.persistence.jaxb.json;
+    exports org.eclipse.persistence.jaxb.metadata;
+    exports org.eclipse.persistence.jaxb.plugins;
+    exports org.eclipse.persistence.jaxb.rs;
+    exports org.eclipse.persistence.jaxb.xmlmodel;
+
+    exports org.eclipse.persistence.jaxb.xjc;
+
+    exports commonj.sdo.impl;
+
+    exports org.eclipse.persistence.sdo;
+    exports org.eclipse.persistence.sdo.helper;
+    exports org.eclipse.persistence.sdo.helper.delegates;
+    exports org.eclipse.persistence.sdo.helper.jaxb;
+    exports org.eclipse.persistence.sdo.types;
+
+    exports org.eclipse.persistence.dbws;
+    exports org.eclipse.persistence.jpa.rs;
+    exports org.eclipse.persistence.jpa.rs.annotations;
+    exports org.eclipse.persistence.jpa.rs.exceptions;
+    exports org.eclipse.persistence.jpa.rs.features;
+    exports org.eclipse.persistence.jpa.rs.features.core.selflinks;
+    exports org.eclipse.persistence.jpa.rs.features.fieldsfiltering;
+    exports org.eclipse.persistence.jpa.rs.features.paging;
+    exports org.eclipse.persistence.jpa.rs.logging;
+    exports org.eclipse.persistence.jpa.rs.resources;
+    exports org.eclipse.persistence.jpa.rs.resources.common;
+    exports org.eclipse.persistence.jpa.rs.util;
+    exports org.eclipse.persistence.jpa.rs.util.list;
+
+    //exported through EclipseLink PUBLIC API
+    exports org.eclipse.persistence.internal.cache;
+    exports org.eclipse.persistence.internal.codegen;
+    exports org.eclipse.persistence.internal.core.databaseaccess;
+    exports org.eclipse.persistence.internal.core.descriptors;
+    exports org.eclipse.persistence.internal.core.helper;
+    exports org.eclipse.persistence.internal.core.queries;
+    exports org.eclipse.persistence.internal.core.sessions;
+    exports org.eclipse.persistence.internal.databaseaccess;
+    exports org.eclipse.persistence.internal.descriptors;
+    exports org.eclipse.persistence.internal.descriptors.changetracking;
+    exports org.eclipse.persistence.internal.dynamic;
+    exports org.eclipse.persistence.internal.expressions;
+    exports org.eclipse.persistence.internal.helper;
+    exports org.eclipse.persistence.internal.identitymaps;
+    exports org.eclipse.persistence.internal.indirection;
+    exports org.eclipse.persistence.internal.jaxb;
+    exports org.eclipse.persistence.internal.jpa;
+    exports org.eclipse.persistence.internal.jpa.deployment;
+    exports org.eclipse.persistence.internal.jpa.metadata.xml;
+    exports org.eclipse.persistence.internal.jpa.rs.metadata.model;
+    exports org.eclipse.persistence.internal.jpa.rs.metadata.model.v2;
+    exports org.eclipse.persistence.internal.libraries.asm;
+    exports org.eclipse.persistence.internal.localization;
+    exports org.eclipse.persistence.internal.oxm;
+    exports org.eclipse.persistence.internal.oxm.mappings;
+    exports org.eclipse.persistence.internal.oxm.record;
+    exports org.eclipse.persistence.internal.oxm.record.namespaces;
+    exports org.eclipse.persistence.internal.oxm.schema.model;
+    exports org.eclipse.persistence.internal.oxm.unmapped;
+    exports org.eclipse.persistence.internal.platform.database;
+    exports org.eclipse.persistence.internal.platform.database.oracle;
+    exports org.eclipse.persistence.internal.queries;
+    exports org.eclipse.persistence.internal.security;
+    exports org.eclipse.persistence.internal.sequencing;
+    exports org.eclipse.persistence.internal.sessions;
+    exports org.eclipse.persistence.internal.sessions.coordination;
+    exports org.eclipse.persistence.internal.sessions.coordination.corba;
+    exports org.eclipse.persistence.internal.sessions.coordination.jms;
+    exports org.eclipse.persistence.internal.sessions.factories;
+    exports org.eclipse.persistence.internal.sessions.factories.model;
+    exports org.eclipse.persistence.internal.sessions.remote;
+    exports org.eclipse.persistence.internal.xr;
+
+    //exported through EclipseLink INTERNAL API
+    exports org.eclipse.persistence.internal.helper.linkedlist;
+    exports org.eclipse.persistence.internal.helper.type;
+    exports org.eclipse.persistence.internal.jpa.metadata;
+    exports org.eclipse.persistence.internal.jpa.metadata.accessors;
+    exports org.eclipse.persistence.internal.jpa.metadata.accessors.classes;
+    exports org.eclipse.persistence.internal.jpa.metadata.accessors.mappings;
+    exports org.eclipse.persistence.internal.jpa.metadata.accessors.objects;
+    exports org.eclipse.persistence.internal.jpa.metadata.additionalcriteria;
+    exports org.eclipse.persistence.internal.jpa.metadata.cache;
+    exports org.eclipse.persistence.internal.jpa.metadata.changetracking;
+    exports org.eclipse.persistence.internal.jpa.metadata.columns;
+    exports org.eclipse.persistence.internal.jpa.metadata.converters;
+    exports org.eclipse.persistence.internal.jpa.metadata.copypolicy;
+    exports org.eclipse.persistence.internal.jpa.metadata.graphs;
+    exports org.eclipse.persistence.internal.jpa.metadata.inheritance;
+    exports org.eclipse.persistence.internal.jpa.metadata.listeners;
+    exports org.eclipse.persistence.internal.jpa.metadata.locking;
+    exports org.eclipse.persistence.internal.jpa.metadata.mappings;
+    exports org.eclipse.persistence.internal.jpa.metadata.multitenant;
+    exports org.eclipse.persistence.internal.jpa.metadata.nosql;
+    exports org.eclipse.persistence.internal.jpa.metadata.partitioning;
+    exports org.eclipse.persistence.internal.jpa.metadata.queries;
+    exports org.eclipse.persistence.internal.jpa.metadata.sequencing;
+    exports org.eclipse.persistence.internal.jpa.metadata.sop;
+    exports org.eclipse.persistence.internal.jpa.metadata.structures;
+    exports org.eclipse.persistence.internal.jpa.metadata.tables;
+    exports org.eclipse.persistence.internal.jpa.metadata.transformers;
+    exports org.eclipse.persistence.internal.oxm.schema;
+    exports org.eclipse.persistence.internal.sessions.cdi;
+    exports org.eclipse.persistence.internal.sessions.coordination.broadcast;
+    exports org.eclipse.persistence.internal.sessions.factories.model.event;
+    exports org.eclipse.persistence.internal.sessions.factories.model.log;
+    exports org.eclipse.persistence.internal.sessions.factories.model.login;
+    exports org.eclipse.persistence.internal.sessions.factories.model.platform;
+    exports org.eclipse.persistence.internal.sessions.factories.model.pool;
+    exports org.eclipse.persistence.internal.sessions.factories.model.project;
+    exports org.eclipse.persistence.internal.sessions.factories.model.property;
+    exports org.eclipse.persistence.internal.sessions.factories.model.rcm;
+    exports org.eclipse.persistence.internal.sessions.factories.model.rcm.command;
+    exports org.eclipse.persistence.internal.sessions.factories.model.sequencing;
+    exports org.eclipse.persistence.internal.sessions.factories.model.session;
+    exports org.eclipse.persistence.internal.sessions.factories.model.transport;
+    exports org.eclipse.persistence.internal.sessions.factories.model.transport.discovery;
+    exports org.eclipse.persistence.internal.sessions.factories.model.transport.naming;
+    exports org.eclipse.persistence.internal.xr.sxf;
+
+    uses org.eclipse.persistence.jpa.rs.PersistenceContextFactoryProvider;
+
+    provides javax.persistence.spi.PersistenceProvider with org.eclipse.persistence.jpa.PersistenceProvider;
+    provides com.sun.tools.xjc.Plugin with org.eclipse.persistence.jaxb.plugins.BeanValidationPlugin;
+
+}
diff --git a/jpa/eclipselink.jpa.test/antbuild.xml b/jpa/eclipselink.jpa.test/antbuild.xml
index 28cd4e039d9..e642d52778a 100644
--- a/jpa/eclipselink.jpa.test/antbuild.xml
+++ b/jpa/eclipselink.jpa.test/antbuild.xml
@@ -1,6 +1,6 @@
 <!--
 
-    Copyright (c) 1998, 2020 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 1998, 2023 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Public License v. 2.0 which is available at
@@ -381,6 +381,7 @@
         <echo message="   '${jpatest.2.coretest.dir}/${coretest.jar}'"/>
         <echo message="   '${jpatest.2.coretest.dir}/${coretest.framework.jar}'"/>
         <echo message="   '${jpatest.2.jpa.plugins.dir}/${persistence20.jar}'"/>
+        <echo message="   '${build.dir}/${persistence20_21_diff.jar}'"/>
         <echo message="   '${jpatest.2.common.plugins.dir}/${javax.validation.jar}'"/>
         <echo message="   '${jpatest.2.base.dir}/${eclipselink.jar}'"/>
         <echo message="   '${jpatest.2.common.plugins.dir}/${annotation-api.jar}'"/>
@@ -401,6 +402,7 @@
             <pathelement path="${jpatest.2.coretest.dir}/${coretest.jar}"/>
             <pathelement path="${jpatest.2.coretest.dir}/${coretest.framework.jar}"/>
             <pathelement path="${jpatest.2.jpa.plugins.dir}/${persistence20.jar}"/>
+            <pathelement path="${jpatest.2.base.dir}/${build.dir}/${persistence20_21_diff.jar}"/>
             <pathelement path="${jpatest.2.common.plugins.dir}/${javax.validation.jar}"/>
             <pathelement path="${jpatest.2.base.dir}/${eclipselink.jar}"/>
             <pathelement path="${jpatest.2.common.plugins.dir}/${annotation-api.jar}"/>
diff --git a/jpa/eclipselink.jpa.wdf.test/antbuild.xml b/jpa/eclipselink.jpa.wdf.test/antbuild.xml
index 5f005ea26f8..933d7076fa9 100644
--- a/jpa/eclipselink.jpa.wdf.test/antbuild.xml
+++ b/jpa/eclipselink.jpa.wdf.test/antbuild.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!--
 
-    Copyright (c) 2018, 2021 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2018, 2023 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Public License v. 2.0 which is available at
@@ -119,6 +119,7 @@
             <pathelement path="${wdf_test.2.core.test.dir}/${classes.dir}"/>
             <pathelement path="${wdf_test.2.core.test.dir}/${wdf.tests.jar}"/>
             <pathelement path="${wdf_test.2.jpa.plugins.dir}/${persistence20.jar}"/>
+            <pathelement path="${wdf_test.2.trunk.dir}/${build.dir}/${persistence20_21_diff.jar}"/>
             <pathelement path="${wdf_test.2.common.plugins.dir}/${ejb.jar}"/>
             <pathelement path="${wdf_test.2.common.plugins.dir}/${glassfish-corba-omgapi.jar}"/>
             <!-- These paths are unneeded for compile or run (from core.depend) may be needed in future -->
diff --git a/utils/eclipselink.dbws.builder.test/antbuild.xml b/utils/eclipselink.dbws.builder.test/antbuild.xml
index fe67b3652ea..acd807d434d 100644
--- a/utils/eclipselink.dbws.builder.test/antbuild.xml
+++ b/utils/eclipselink.dbws.builder.test/antbuild.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!--
 
-    Copyright (c) 2018, 2021 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2018, 2023 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Public License v. 2.0 which is available at
@@ -143,6 +143,7 @@
         <echo message="ddlparser.jar='${dbwsbldrtest.2.plugins.dir}/${ddlparser.jar}'"/>
         <echo message="wsdl.jar     ='${dbwsbldrtest.2.plugins.dir}/${wsdl.jar}'"/>
         <echo message="persistence.jar ='${dbwsbldrtest.2.common.plugins.dir}/${persistence.jar}'"/>
+        <echo message="persistence20_21_diff.jar ='${dbwsbldrtest.2.base.dir}/${build.dir}/${persistence20_21_diff.jar}'"/>
         <echo message="javax.activation.lib =${dbwsbldrtest.2.common.plugins.dir}/${javax.activation.jar}"/>
         <echo message="javax.annotation.lib =${dbwsbldrtest.2.common.plugins.dir}/${javax.annotation.jar}"/>
         <echo message="javax.validation.lib =${dbwsbldrtest.2.common.plugins.dir}/${javax.validation.jar}"/>
@@ -163,6 +164,7 @@
         <property name="ddlparser.lib"    value="${dbwsbldrtest.2.plugins.dir}/${ddlparser.jar}"/>
         <property name="wsdl.lib"         value="${dbwsbldrtest.2.plugins.dir}/${wsdl.jar}"/>
         <property name="persistence.lib"  value="${dbwsbldrtest.2.common.plugins.dir}/${persistence.jar}"/>
+        <property name="persistence20_21_diff.lib" value ="${dbwsbldrtest.2.base.dir}/${build.dir}/${persistence20_21_diff.jar}"/>
         <property name="javax.activation.lib"  value="${dbwsbldrtest.2.common.plugins.dir}/${javax.activation.jar}"/>
         <property name="javax.annotation.lib"  value="${dbwsbldrtest.2.common.plugins.dir}/${javax.annotation.jar}"/>
         <property name="javax.validation.lib"  value="${dbwsbldrtest.2.common.plugins.dir}/${javax.validation.jar}"/>
@@ -183,6 +185,7 @@
         <available file="${junit.lib}"            property="junit.lib.exist"/>
         <available file="${eclipselink.lib}"      property="eclipselink.exist"/>
         <available file="${persistence.lib}"      property="persistence.exist"/>
+        <available file="${persistence20_21_diff.lib}"  property="persistence20_21_diff.exist"/>
         <available file="${asm.lib}"              property="asm.bundle.exist"/>
         <available file="${servlet.lib}"          property="servlet.lib.exist"/>
         <available file="${wsdl.lib}"             property="wsdl.lib.exist"/>
@@ -206,6 +209,7 @@
         <!--fail message="Cannot find: '${junit.lib}'"       unless="junit.lib.exist"/-->
         <fail message="Cannot find: '${eclipselink.lib}'" unless="eclipselink.exist"/>
         <fail message="Cannot find: '${persistence.lib}'" unless="persistence.exist"/>
+        <fail message="Cannot find: '${persistence20_21_diff.lib}'" unless="persistence20_21_diff.exist"/>
         <fail message="Cannot find: '${asm.lib}'"         unless="asm.bundle.exist"/>
         <fail message="Cannot find: '${servlet.lib}'"     unless="servlet.lib.exist"/>
         <fail message="Cannot find: '${wsdl.lib}'"        unless="wsdl.lib.exist"/>
@@ -237,6 +241,7 @@
             <pathelement path="${javax.xml.ws.lib}"/>
             <pathelement path="${eclipselink.lib}"/>
             <pathelement path="${persistence.lib}"/>
+            <pathelement path="${persistence20_21_diff.lib}"/>
             <pathelement path="${asm.lib}"/>
             <pathelement path="${servlet.lib}"/>
             <pathelement path="${dbwsbldr.lib}"/>